Table for manufacturing cementitious tile



April 17, 1934. A, H, SEXTON 1,955,611

TABLE FORMANUFACTURING CEMENTITIOUS TILE Filed Sept. 14, 1932 2Sheets-Sheet 1 A. H. SEXTON TABLE FOR MANUFACTURING CEMENTITIOUS TILEFiled Sept. 14, 1932 2 Sheets-Sheet gjwuanwoc AfiJeXZon duouwq A ril 17,1934.

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Patented Apr. 17, 1934 I I NITE STATES P TENT OFFICE TABLE FORMANUFACTURING CEMENTITIOUS TILE August H. Sexton, Portsmouth, Ohio,assignor to Superior Cement Corporation, Portsmouth, Ohio, a corporationof Ohio Application September 14, 1932, Serial No. 633,157

9 Claims. (Cl. 25- -41) This invention relates to an improved formingstrength to the frame structure consistent with table for use in themanufacture of cementitious the work required thereof. Secured to theframe tile or similar monolithic building units, and the structure belowits top and along one side is. a

primary object thereof resides in the provision of shelf 4, whichcarries an electric motor 5. The 5 a table formed for the reception ofmolds in shaft 6 of the motor projects at each ,endb ohd which thecementitious materials used in tile and the motor housing and slidablykeyed to the probuilding unit manufacture are contained in a jectingends of the shaft 6 are disk-like friction formative state and whereinprovision is made clutch members 7. Under the control of the forvibrating the molds, while the latter are disab e Op a se t b s may", beposed on the table, for the purpose of producing selectively engagedwith corresponding driven tile or the like having smooth dense outersurclutch members 8 which; i t is 81 are faces, to dispel air from thecementitious mixshown as being secured by set screws or the turescontained within the molds, to properly like 9' with longitudinallyaligned shafts 10 and distribute mineral coloring matter when the lat-11' rotatably supported in bearings 12 mounted 15 ter is used in theformation of tile, and'to secure in connection with the shelf 4. g

other advantages hereinafter more particularly To control the selectiverotation of the shafts pointed out. 10 and'll, the table is providedwitha pair of piv-' It is another object of the invention to pro-' otedtreadles 13 and 14, each ofwhich ispiv; vide a tile-forming table of thecharacter set otally mounted as at 151 in'connection with the forthwherein the mold receiving portion of the frame structure of the table.Intermediately of table is formed to comprise a movable belt and theirlengths, the treadles are united by means wherein provision is made,under the control of of rods 16 with'theouter end's of ajyoke 17. Thethe operator, to first vibrate the molds when intermediate po i O heyoke 17 is fixed't'oa initially positioned on the belt and. later tocon- QCk Shaft S a y jou a d for" rotation duct the molds to desiredpoints of discharge; transversely of the lower part of 'the shelf 4. OneFor a further understanding of the-invention, end of the rock shaftha's'fixed thereto a crank reference is to be'had to the followingdescriparm 19, which-has its upper end, as shown in tion and theaccompanying drawings, wherein: Fig. 4; received within "a notch formedin a shift- Fig. l is a side elevation of the improved tile g d the erbeing slidably ec iv forming table comprising the present invention;openings provided in spaced angle members 21 Fig. 2 is a verticaltransverse sectional view forming a part of the table frame structure,taken through the table on the plane indicated Fixed to the rod 20are'clutoh Bn agiIigaiIfiSZZ by the line 2--2 of Fig. 1; which arelocated in contact with the keyed; Fig. 3 is a vertical longitudinalsection view driving members '7; By; this construction, the

35v taken through the mold receiving belt of the operator upondepressingthe treadle; 13,'will table on the plane indicated by the line 3-3 ofcause the rotation-of the rock-shaft 18f through Fig. 2; the provisionofthe yoke 17, which resultsin the' Fig. 4 is a horizontal sectional viewdisclosing movement ofthe'rod'20'so that one of the arms the motor anddriving shaft of the table, the 22 will force'one ofthe clutch membersTin a 40 plane of the section being indicated by the line direction to:frictionallyengage the 'complemen- 44 of Fig. l; tal clutch member 3,thereby effecting the rota-- Fig. 5 is a transverse sectional view onthe tion of'th'e shaft 10' which is used, as will belater planeindicated by the line 55 of Fig. 3, disdescribed, in operating theconveyor belt 23 of the closing the eccentric shaft and associatedmechtable. If the 1 treadle l l'is depressed, the' other clutch memberwill'be operated to effect the Fig. 6 is a detail vertical sectionalview of the rotation of the shaft 11, which is employed in drivemechanism for the conveyor belt, on'the vibrating the table; as will bemore fully deplane indicated by the line 6-6 of Fig. 1. scribed M I v Ie r Referring more particularly to the drawings, Jou'rnaled" in the endsof-thetable areshafts 50 my improved table comprises a frame preferably2 1 which carry rollers 25 arouhdwhichpasse's' 1G5 composed of anglemembersand arranged to inthe endless conveyor belt'23f The upper run ofclude vertical legs 1 united at their upper ends this beltengages'with-and' travelsiove'r a"1o'n" by means of horizontallyextending bars 2. Ad gitudinally' extending plate 26, which is supditional horizontal extending bars 3'may be pr'oported in a' horizontalposition by" means of a 55 vided for imparting the desired-rigidity andplurality of'sub's'tantially U -shapedsprings 27,

which are carried by the upper portions of the table frame structure.Depending from the under side of the plate 26 are bearings 28 in whichis supported for rotation a shaft 29 provided with a plurality ofeccentrics 30, the latter being fixed to the shaft 29 by means of setscrews or the like 31. The shaft 29 is also provided with a pulley 32over which passes a belt 33 which leads to a corresponding pulley 34arranged for rotation in connection with the shaft 11. Thus bydepressing the pedal 14, movement will be imparted to the shaft 11 andthence through the belt 33 to the eccentric shaft 29. Thus, due to theunbalanced condition of the shaft 29 and the spring supports for theplate 26, vibratory movement will be imparted to said table, and theupper run of the belt and the molds 35 positioned on the upper surfaceof the belt 23 to cause the desired distribution of materials in saidmolds.

Following this period of vibration of the molds, the latter may beadvanced longitudinally of the table and removed to other points ofhandling by longitudinal travel of the belt 23. This is accomplished bydepressing the treadle 13 and releasing the treadle 14. The operation ofthe treadle 13 results in the rotation of the shaft 10. As shown inFigs. 4 and 6, one end of the shaft 10 enters a housing 36 and has fixedthere to for rotation within the housing a worm 37. The worm meshes witha worm gear 38 fixed upon a transversely extending shaft 39. The outerend of the shaft 39 is squared for the reception of a spur pinion 40,the teeth of which engage with an enlarged gear 41 which is secured tothe drive shaft for the belt conveyor 23. In this manner, by merelystepping on the treadle 13, longitudinal movement may be imparted to thebelt conveyor to advance the molds 35 to desired points of discharge.

As set forth in my co-pending application, Serial No. 633,158, filedSeptember 14, 1932, the molds 35 comprise sheet metal pans, preferablyformed'from stainless steel or a copper-silicon alloy. These pan shapedmolds are adapted to receive a thin fiuid cementitious mixture composedof equal parts (or other desired proportions) of fine sand and cement towhich is added water in suflicient quantities to produce a mixturepossessing a cream-like consistency. Also, to this mixture, there isadded color-imparting ingredients usually in the form of a mineraloxide. This primary mixture is first poured in the pan mold to asuitable depth and the mold is placed on the belt 23 and vibrated bydepressing the treadle 14. This vibration of the mold dispels air fromthe mixture, distributes the coloring matter and settles the cement inthe mixure on the smooth inner surface of the mold, so that when thetile sets, its surface in contact with the mold will be of a dense, hardand smooth texture comparable in use with that of fired clay tile.Following the vibration of this primary mixture of cementitiousmaterials, there is applied to the mold a coarser cementitious mixtureof plastic consistency which is inserted in the mold over the primarymixture to the level of the upper edges of the mold. The entire mold maybe again vibrated for a relatively short period of time and followingwhich the treadle 13 may be depressed to cause travel of the belt in adi rection away from the operator to provide space on the belt forsubsequent mold-filling and tileforming operations of a duplicativecharacter. The filled molds may be removed by an operator from the outerend of the belt and transferred to suitable drying racks (not shown) inwhich the cementitious materials are allowed to remain for a sufficientperiod of time to insure their hardening or setting. After this, themolds are removed from the tile and subjected to reuse. The detailsregarding the method of manufacturing the tile have been set forth in myabove identified application and therefore do not comprise a part of thepresent invention which relates specifically to the construction of thetable. Lateral stationary guides 23a are provided at the side edges ofthe belt 23 to confine materials placed on the upper run of the beltagainst lateral displacement.

While I have described what I consider to be the preferred form of myinvention, nevertheless it will be understood by those skilled in theart that the same is subject to considerable modification withoutdeparting from the principles of the invention, as the latter has beendefined in the following claims.

What is claimed is:

1. A table for manufacturing moldable articles comprising a frame, anendless conveyor belt sup ported by and movable longitudinally of theframe, a plate arranged beneath the upper run of 1e conveyor belt tosupport the same in a horizontal plane, resilient supporting meansuniting said plate with the upper portion of said frame, and means forimparting vibrating movement to said plate and the upper run of saidbelt.

2. In a machine for manufacturing moldable articles, a frame, a flat onepiece conveyor belt supported by and movable longitudinally of theframe, resilient means carried by said frame for supporting the upperrun of said belt, and means for imparting vibrating movement to saidresilient means and the upper run of the belt engaged thereby.

3. In a machine for manufacturing moldable articles, a frame, spacedlongitudinally extending guides carried by said frame, a belt having itsupper run arranged between said guides, supporting devices carried bysaid frame and cooperative with the upper run of said belt to supportthe weight of molding appliances positioned on said belt, and means forimparting vibration to the belt and the molding appliances positionedthereon between said guides.

4. In a machine for manufacturing moldable articles, a frame, a conveyorbelt supported by and. movable longitudinally of the frame, fixed guidescarried by said frame cooperative with the opposite longitudinal edgesof the upper run of said belt, and a resiliently supported plate memberarranged below the upper run of said belt for effecting the support ofmolding appliances on the upper surface of the belt.

5. In a machine for manufacturing moldable articles, a frame, a conveyorbelt carried by and movable longitudinally of said frame, fixedlongitudinally extending guides arranged contiguous to the oppositelongitudinal edges of the upper run of said belt, said guides beingstationarily supported in connection with said frame, a plate memberarranged below and in engagement with the upper run of said belt andextending substantially throughout the length thereof, and resilientsupporting means arranged between said plate member and said frame.

6. In a machine for manufacturing moldable articles, a frame, a conveyorbelt carried by and movable longitudinally of said frame, fixedlongitudinally extending guides arranged contiguous to the oppositelongitudinal edges of the upper run of said belt, said guides beingstationarily sup:- ported in connection with said frame, a plate memberarranged below and in engagement with the upper run of said belt andextending substantially throughout the length thereof, resilientsupporting means arranged between said plate member and said frame, andmeans for imparting vibrating movement to said plate member.

7. In a machine for manufacturing moldable articles, a frame structure,rotatablyjournaled belt wheels arranged at the opposite ends of saidframe structure, an endless belt engaging with said wheels, means fordriving one of said wheels to impart movement to said belt, stationarylongitudinally extending guides carried by said frame structure andarranged contiguous to the opposite longitudinal edges of and projectingabove the upper run of said belt, a plate member arranged below and incontact with the upper run of said belt and free from connection withsaid guides, and resilient supporting means arranged between said platemember and said frame structure.

8. In a machine for manufacturing moldable articles, a frame structure,rotatably journaled belt wheels arranged at the opposite ends of saidframe structure, an endless belt engaging with said wheels, means fordriving one of said wheels to impart movement to said belt, stationarylongitudinally extending guides carried by said frame structure andarranged contiguous to the opposite longitudinal edges of and projectingabove the upper run of said belt, a plate member arranged below and incontact with the upper run of said belt and free from connection withsaid guides, resilient supporting means arranged between said platemember and said frame structure, a shaft rotatably journaled inconnection with the under part of said plate member, and an eccentricfixed to rotate with said shaft.

9. In a machine for manufacturing moldable articles, a frame structure,rotatably journale'd belt wheels arranged at the opposite ends of saidframe structure, an endless belt engaging with said wheels, means fordriving one of said wheels to impart movement to said belt, stationarylongitudinally extending guides carried by said frame structure andarranged contiguous to the opposite longitudinal edges of and projectingabove the upper run of said belt, a plate member arranged below and incontact with the upper run of said belt and free from connection withsaid guides, resilient supporting means arranged between said platemember and said frame structure, a shaft rotatably journaled inconnection with the under part of said plate member, an eccentric fixedto rotate with said shaft, and means for effecting the rotation of theeccentric shaft when said belt is stationary.

AUGUST H. SEXTON.

